body {
  min-width: 320px;
  max-width: 750px;
  /* 375px 设计稿，flexible.js 分成了15份 */
  /* 最小320px适配，最大750px适配 */
  width: 15rem;
  margin: 0 auto !important;
  line-height: 1.5;
  font-family: Arial, Helvetica;
  background-color: #fff;
  color: #222;
}

@media screen and (min-width: 320px) {
  html {
    font-size: 21.33333333px;
  }
}

@media screen and (min-width: 360px) {
  html {
    font-size: 24px;
  }
}

@media screen and (min-width: 375px) {
  html {
    font-size: 25px;
  }
}

@media screen and (min-width: 384px) {
  html {
    font-size: 25.6px;
  }
}

@media screen and (min-width: 400px) {
  html {
    font-size: 26.66666667px;
  }
}

@media screen and (min-width: 414px) {
  html {
    font-size: 27.6px;
  }
}

@media screen and (min-width: 424px) {
  html {
    font-size: 28.26666667px;
  }
}

@media screen and (min-width: 480px) {
  html {
    font-size: 32px;
  }
}

@media screen and (min-width: 540px) {
  html {
    font-size: 36px;
  }
}

@media screen and (min-width: 720px) {
  html {
    font-size: 48px;
  }
}

@media screen and (min-width: 750px) {
  html {
    font-size: 50px;
  }
}

body,
html,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
form,
input,
textarea,
p,
th,
td {
  margin: 0;
  padding: 0;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

ol,
ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: #eee;
}

button {
  border: none;
}

input,
textarea,
button,
img {
  outline: none;
  border: 0;
}

a,
input,
select,
textarea,
a:active,
a:hover {
  outline: none;
}